453     const int bidx = ctx->buffer_index;  in capture_screen()  local
455     av_bprint_clear(&ctx->buffer[bidx]);  in capture_screen()
488             av_bprintf(&ctx->buffer[bidx], "{\\an7}{\\pos(%d,%d)}", x, y);  in capture_screen()
579 …                av_bprintf(&ctx->buffer[bidx], "%s%s%s%s%s", e_tag, s_tag, c_tag, b_tag, override);  in capture_screen()
582                     av_bprintf(&ctx->buffer[bidx], "%s%s%s%s\\h", e_tag, s_tag, c_tag, b_tag);  in capture_screen()
584 …                  av_bprintf(&ctx->buffer[bidx], "%s%s%s%s%c", e_tag, s_tag, c_tag, b_tag, row[j]);  in capture_screen()
589             av_bprintf(&ctx->buffer[bidx], "\\N");  in capture_screen()
592     if (!av_bprint_is_complete(&ctx->buffer[bidx]))  in capture_screen()
594     if (screen->row_used && ctx->buffer[bidx].len >= 2) {  in capture_screen()
595         ctx->buffer[bidx].len -= 2;  in capture_screen()
596         ctx->buffer[bidx].str[ctx->buffer[bidx].len] = 0;  in capture_screen()
846     int bidx = ctx->buffer_index;  in decode()  local
873             ctx->buffer_index = bidx = !ctx->buffer_index;  in decode()
877         if (ctx->buffer[bidx].str[0] || ctx->real_time) {  in decode()
878             ff_dlog(ctx, "cdp writing data (%s)\n", ctx->buffer[bidx].str);  in decode()
887             ret = ff_ass_add_rect(sub, ctx->buffer[bidx].str, ctx->readorder++, 0, NULL, NULL);  in decode()
896         bidx = !ctx->buffer_index;  in decode()
897         ret = ff_ass_add_rect(sub, ctx->buffer[bidx].str, ctx->readorder++, 0, NULL, NULL);  in decode()
904             sub->end_display_time = ctx->buffer[bidx].len * 20;  in decode()
915         ret = ff_ass_add_rect(sub, ctx->buffer[bidx].str, ctx->readorder++, 0, NULL, NULL);  in decode()